What is your PCIe lane running at? 1X,2X,4X,8X, or 16X? o.o nvm. Its running at 16X, can see it in GPU-Z. What drivers do you have? I suggest doing, CCleaner, Cleaning up registry with some software, defrag drive..

up that CPU clock if you can. work on getting them timings tighter or the ram running faster. Overclock the card more if you can... Some people aren't like me and push everything to the max but there are alot that are... idk how much higher your stuff can get if any... If it is your max OC on everything then sorry i wasted your time.
get tweaked drivers and try them.up the PCI-E to 110 and see if that helps any. I don't think it will but it is worth a try even if you only get a few points.